1. Family: Poaceae Barnhart
    1. Genus: Elymus L.
      1. Elymus hybridus (Keng) S.L.Chen

        This species is accepted, and its native range is China (Jiangsu).

    [GB]
    Habit
    Perennial; caespitose. Culms erect, or geniculately ascending; 70-100 cm long; 5-6 -noded. Leaf-sheaths longer than adjacent culm internode; smooth; glabrous on surface. Leaf-sheath auricles falcate. Ligule an eciliate membrane; 0.5-1 mm long; truncate. Leaf-blades 12-25 cm long; 5-8 mm wide. Leaf-blade surface scabrous; rough adaxially.
    Inflorescences
    Inflorescence composed of racemes. Racemes 1; single; drooping; bilateral; 27 cm long. Rhachis flattened; scabrous on margins. Spikelet packing broadside to rhachis; regular; 2 -rowed. Rhachis internodes 10-17 mm long. Spikelets solitary. Fertile spikelets sessile.
    Spikelets
    Spikelets comprising 6-8 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 17-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5 mm long; pubescent. Floret callus pubescent. Floret callus hairs 0-1 mm long.
    Fertile
    Spikelets comprising 6-8 fertile florets; with diminished florets at the apex. Spikelets laterally compressed; 17-20 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1.5 mm long; pubescent. Floret callus pubescent. Floret callus hairs 0-1 mm long.
    Glume
    Glumes persistent; similar; subequal in width; shorter than spikelet. Lower glume lanceolate, or oblong; 6-8 mm long; coriaceous; much thinner on margins; without keels; 3-5 -veined. Lower glume surface scabrous; rough on veins. Lower glume apex acuminate; muticous, or awned; 1 -awned. Lower glume awn 1-2.5 mm long. Upper glume lanceolate, or oblong; 8-9 mm long; coriaceous; with membranous margins; without keels; 5-7 -veined. Upper glume surface scabrous; rough on veins. Upper glume apex acuminate; muticous, or awned; 1 -awned. Upper glume awn 1-2.5 mm long.
    Florets
    Fertile lemma lanceolate, or oblong; 10-11 mm long; coriaceous; much thinner on margins; without keel; 5 -veined. Lemma surface pubescent; hairy all along, or above and below. Lemma margins ciliate. Lemma apex awned; 1 -awned. Principal lemma awn straight; 20-30 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels winged; narrowly winged; ciliolate; adorned above. Palea surface pilose; hairy on margins; hairy above. Palea apex obtuse. Apical sterile florets resembling fertile though underdeveloped.
    Flowers
    Lodicules 2; membranous. Anthers 3; 2 mm long; yellow. Stigmas 2. Ovary pubescent on apex.
    Fruits
    Caryopsis with adherent pericarp; hairy at apex; apex unappendaged. Hilum linear.
    Distribution
    Asia-temperate: China.
    Reference
    Triticeae. Chen 2001.

    Distribution

    Native to:

    China Southeast

    Elymus hybridus (Keng) S.L.Chen appears in other Kew resources:

    First published in Fl. China 22: 422 (2006)

    Accepted by

    • Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    Literature

    Kew Backbone Distributions
    • Wu, Z. & Raven, P.H. (eds.) (2006). Poaceae Flora of China 22: 1-733. Missouri Botanical Garden Press, St. Louis.

    Sources

    GrassBase - The Online World Grass Flora
    http://creativecommons.org/licenses/by-nc-sa/3.0

    Kew Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2020. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0